Temperature-indicator.



section of one oi2 the roman STRZYCZKOWSKI, {L NEW YORK, lil'. Y.

TEMPERATUREJNDITOB.

Application led April 16, 1918.. Serial No. 22SA147.

To all whom it may concern:

Be it known that l, JULIAN S'rezyoznow sm, a citizen of the United States, residing at'4 New York, county of N ew York, and State of New York, have invented certain new and useful Improvements in Temperature-Indicators, of which the following is a specification.

This invention relates to improvements in devices for indicating the temperature of liquids and the like in the immediate vi cinity.

The principal object of the invention is to provide means whereby the `temperature of a body of water may be ascertained and correctly indicated, the particular object in view being to indicate the temperature of water as used in connection with automobile radiators, the indicating being located wherel it may be conveniently observed by the operator of the vehicle.

This object is attainedy by the novel construction and combination of parts hereafter described, and shown in the accon'lpanying drawing, forming a material part of this disclosure, and in which Figure 1 is a fragmentary, side elevational and sectional view, illustrating 'the manner of connecting and ,attaching the several parts. f .i i v Fig. 2 is an enlarged plan view of the indicator or mechanism cam'ng.

Fig. 3 is a horizontal on line 3 3 of Fig. 4. A

Fig. 4 isv a, vertical sectional view taken on line 1*4 of Fig. 2, and

Fig.' 5 is a fragmentary view, showing a details employed.

inig. 1 of the drawings, a hody'of water 10,. iscontained within a casing ll, adjacent to the dash-board l2 of the vehicle, and engaged within the casing 11, so as to he surrounded by 'the water, is a closed cylinder 14, adapted to' contain alcohol or like non-freezing liquids, which is expansihle, due to changes in temperature.

Engaged with the cylinder 14, .is a pipe 15, passing through the dashboard 12, so placed as to he readily seen by the operatorof the vehicle. The indicator casing vcomprises a hase 18,- from opposite sides of which rise the standards 19 sup or'ting a transparent disk or plate 20, prererably made of lass, and held in position' upon the stan ards by the inturned edges 21 of a casing 22,

forming a cylinder, `the casing being secuned Specication of Letters Patent.

part of the device' sectional View, taken 'the saine will cause the hand 'of Patenten ree. aafla..

to the standards by screws 23. llaised eeny trally from the hase 18 isl a hess 25, formed with a pivot bearing adapted to reaeive'the lower end of a spindle 2'?, which rt'ier;

supported by a bracket arm 28, formed-with one of the standards, the

spindle rotatably journaled 1n a disk 30, upon whichzae marginal graduations 31, indicating 'inthe manner of a thermometer, degrees of temperature. Y

Secured to the upper end of the spindle'27 is an index hand 32, the pointer 33 .oiffwhich acts in combination with the graduations 31 in an obvious manner.

Secured to a post 35, fastened to, or formed with, the base 18is the outer end of a hollow spirally wound spring, having convoi-ations 36, its inner end 37 being fastened to an arni, depending .from a disk 10, having a concave upper Surface and arranged within the 'disk '40' is areversely coiled, finely wound, thin spring 41, the outer end 42 of which is engaged with the disk, while the `inner end is attached to the spindle 27, the tension andfaction of the spring 4:1, being such as to return the' pointer 33to its initial position, when the hollow spring '86 is not distorted by the pressure of the liquid held therein. i f

The hollow spring 36 isI in' direct corrnection with the 'pipe 15,"through the hcllow tubular element 4 5, another connection 46, upturned at its outer end and normally covered by a cap el?, providing means hy which the tube inay/be originally lled, or, should the contentsi shrink by evaporation or otherwise, may he refilled at any desired time. Y

Cibviously, when the liquid surrounding the cylinder 14 changes its temperature heyond a given point, it will orcethe liquid contained in the cylindenthrough the pipe l5, and then into the.' ollowpring 36, tending to rotate the which will he well understood, and conversely, should tlieliquid surrounding the cylinder 14 fall below a certain degree of heat, a reverse eect will take place. Y,

From the foregoing it will he clearly evident, that when the temperature changes to anyniaterial extentwirthin the 'cylinder le,

` the index@ amount' lof to ,become actuated,- while the change can ations 3l. l Having thus described my invention what upon a usaale,.the y he' readily ,read from the gradul lill pointer 33 ln a manner 100 sie inclicwhon, th@ combinaplate) a of stanilmis e thei'eo heb sinionnfling Sii-lil; heiewiiw and n in engagcinsnzby svindvl@ rotafbly g, ,an index hand a. ia'plate hel-@W sani indx han@ op iil spiin i@ @ne ture it ififlesii-cni i@ ascertain, Connectionsbctween Said rinse-yvon' and Said hollow spring, disk 'f'ieely inminted on said spindle, an zii-ni extending downward imm Suid disk, 20 and rigidly engaged with inner convolution of Said hollow spring, and a Countei'bzilancing spying having its outer convolutionl en gage@ rigidly within the said disk, and its innen; and nliixeil no said spindle., So that as 25 said hollnw spi-ing is Caused to be actuated by change of 'senipeiiatui'e in the uicl contained there-in, the @Hout will be rcsiliently "fnSmititeil to Said spindle.

testimony Whnleof l haw ziffiixcfl my 30 si l"n a time.

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